Impacts of Cyclic Loading and Unloading Rates on Acoustic Emission Evolution and Felicity Effect of Instable Rock Mass

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Loading rate</td><td class="align_center" colspan="6">0.5 kN/s</td></tr><tr class="thead"><td class="align_left">Unloading rate</td><td class="align_center">0.5 kN/s</td><td class="align_center">1.0 kN/s</td><td class="align_center">1.5 kN/s</td><td class="align_center">2.0 kN/s</td><td class="align_center">3.0 kN/s</td><td class="align_center">4.0 kN/s</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Rock index</td><td class="align_center">1#, 2#, 3#, 4#, 5#</td><td class="align_center">31#, 32#, 33#, 34#, 35#</td><td class="align_center">36#, 37#, 38#, 39#, 40#</td><td class="align_center">41#, 42#, 43#, 44#, 45#</td><td class="align_center">46#, 47#, 48#, 49#, 50#</td><td class="align_center">51#, 52#, 53#, 54#, 55#</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Experimental scheme of impacts of uniaxial cyclic unloading rates on rock AE characteristics.</div>

Advances in Materials Science and Engineering

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Table 2

Table 2: Impacts of Cyclic Loading and Unloading Rates on Acoustic Emission Evolution and Felicity Effect of Instable Rock Mass 